Your Eskimo has been trapped on a mountain and there are impending avalanches! you'll need to help protect him. Each mountain location has a safe spot where he can stand. The rest, is up to you. Build an igloo around him by placing "ice blocks" around him to offset the snow from the mountain. Make sure he lives long enough for the snow to pass over him, and you will unlock new mountains.
Create a block - Use the mouse. Trigger avalanche - Spacebar.